Flat panel energized by blue LED for generating white light

Details Flat panel energized by blue LED for generating white light Flat panel energized by blue LED for generating white light

2007-07-24

2007-07-24

Lebentritt, Michael (Department: 2812)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C349S061000, C349S062000, C349S070000, C257S079000, C257SE27120

Reexamination Certificate

active

11001278

ABSTRACT:
A color, transmissive LCD uses a backlight that supplies a uniform blue light to the back of the liquid crystal layer in an LCD. The blue light, after being modulated by the liquid crystal layer, is then incident on the back surface of phosphor material located above the liquid crystal layer. A first phosphor material, when irradiated with the blue light, generates red light for the red pixel areas of the display, and a second phosphor material, when irradiated with the blue light, generates green light for the green pixel areas of the display. No phosphor is deposited over the blue pixel areas.

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